nasa says mars could have supported human life several billion years ago. according to new tests from the mars curiosity rover the red planet had basic elements needed to live as well as water. this comes 7 months after curiosity touched down in an ancient crater. >> that is very interesting. >>> democrats unveil their budget proposals today one day after republican paul ryan unveiled his plan. the president's proposal won't be ready until next month. we have the latest on the budget battle in washington for us. >> good morning elizabeth. >> good morning. we have the budget blue print in a dick quayed of $4.6 trillion worth of cuts. >> my goal is not to chase a balanced budget just for the sake of balance. my goal is how do we grow the economy put people back to work and if we do that we are going to be bringing in more revenue. >> chairman ryan's proposal hits some of the president's achievement such as privatization of medicare as well as obama care. he suggests cutting 124 billion from that particular program. he went on to say the responsible balanced p